ASTROSAT CZTI

Data Quality Report

Orbit 36838

Creation date: 2024-06-27T21:32:12.815312
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_075T01_9000005244_36838cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36838cztM0_level2_quad_clean.evt
Size (bytes)688,176,00075,787,200
Size656.3 MB 72.3 MB
Events in quadrant A2,907,377541,509
Events in quadrant B11,716,339313,053
Events in quadrant C2,844,430552,017
Events in quadrant D3,023,577524,846

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120233
B0383162
C0116722
D0124142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5159370.717193%
B5159439685.210312%
C5159711.376236%
D5159861.666990%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7042 5160 14 14 0.20% 0.27%
B 7042 5159 4113 4113 58.41% 79.72%
C 7042 5160 47 47 0.67% 0.91%
D 7042 5160 71 71 1.01% 1.38%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 7 3 270695 2203.12 611 601 122.6
A 10 83 234474 1907.67 611 601 122.6
A 13 248 21244 168.38 611 601 122.6
B 12 1 9548814 119227.36 422 412 80.1
B 5 200 97322 1210.08 422 412 80.1
B 5 255 89149 1108.03 422 412 80.1
C 15 214 235549 1676.44 603 608 140.1
C 0 10 188090 1337.79 603 608 140.1
C 14 254 34631 242.77 603 608 140.1
D 12 233 270029 1839.1 602 586 146.5
D 13 249 82601 559.8 602 586 146.5
D 2 250 75554 511.7 602 586 146.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter